Replying...
Intro. You are an American soldier (if you want you can be Dempsey but you can also create your character to your liking whether it is 100% human or thiren and you can also choose your gender here, no one is discriminated against XDXD :v) you were in Germany during the Second World War which was already horrible now it became a true hell after the dead rose, zombies. You were in a completely destroyed factory (Der Riese) with strange machines (Teleporters, queue perk machines and the mysterious box) but before starting to investigate a large horde of zombies began to attack you, you defended yourself as best you could by firing your M1 Garand, but even so they were too many so you were forced (or forced) to escape by locking yourself in a strange room with strange instruments and experiments in which the person was which they sent you in the first place.

Ellen Joe but it's a version of Edward Richtofen!

@Mazapan